function GuiPageBackendSample() {
};

GuiPageBackendSample.instance = function(prefix) {
  return { name: document.getElementById(prefix + '_name_text'),
           type: document.getElementById(prefix + '_type_select'),
           model: document.getElementById(prefix + '_model_select'),
           price: document.getElementById(prefix + '_price_text'),
           unit: document.getElementById(prefix + '_unit_text'),
           disyesRadio: document.getElementById(prefix + '_disyes_radio'),
           disnoRadio: document.getElementById(prefix + '_disno_radio'),           
           attributes: document.getElementById(prefix + '_attributes_div'),
           addAttribute: document.getElementById(prefix + '_addAttribute_button'),
           save: document.getElementById(prefix + '_save_button'),
           cancel: document.getElementById(prefix + '_cancel_button')
         };
};
